Well, I asked the hydroponics store about it, they were unable to sell smaller quantities.
Good idea, though, about splitting up the bigger roll. But I think it's a pain to ship (don't want to bend it too much, etc)
I found this:
which is ordered by the foot ($3/foot). BUT it ends up being like over $10 for a couple feet since they charge $5 for handling. Plus I'm not too sure it's exactly the right stuff (was looking at getting the silver colored one).
Anyone interested in splitting some mylar?
ALSO, has anyone EVER used this stuff as a reflective element in hoods? The hydroponics guy says it does not do well exposed to moisture.